Hard reset instructions
for D-Link DIR-510L rev A1

If your DIR-510L rev A1 router is not working as it should, dropping connections or not
being
responsive, you should first do a reset of the router to see if the problems persist. Other
scenarios where you might want to reset your router is if you've forgotten the password or
misconfigured it and can't get access anymore.
Your can reset your D-Link DIR-510L rev A1 in the following way(s):

With the reset button

Locate the reset button on the back off the router

While the unit is powered on, press the reset button with a sharp object (e.g. paperclip)

Hold the button pressed for 10 seconds, then release.

The unit will reboot by itself and once the WLAN light stops blinking the factory reset is done.

You can now setup your router again through the user interface

The 30-30-30 reset

If the above instructions don't work you can always try the 30-30-30 reset as follows:

When router is powered on, press the reset button and hold for 30 seconds. (Use a paper
clip
or something sharp)

While holding the reset button pressed, unplug the power of the router and hold the
reset
button for 30 seconds

While still holding the reset button down, turn on the power to the unit again and hold
for
another 30 seconds.

This process usually works for resetting any router to it's factory setting.

DIR-510L rev A1 Firmwares

Staying up to date with the latest firmware is a good idea to keep your router even more
secure
from various security flaws.
If you want to squeeze a little bit of extra functionality out of your router, consider
flashing
an open-source firmware like dd-wrt, openWRT or LEDE. Flashing a custom ROM can greatly
increase
the stability and functionality of your old router.
Following are the firmwares that we have identified existing for the D-Link DIR-510L rev A1:

Flashing OpenWrt on the D-Link DIR-510L rev A1

The D-Link DIR-510L rev A1 is supported by OpenWrt according to their Table of
Hardware. So
flashing OpenWrt onto it should be quite straigthforward.
We couldn't find any specific instructions for flashin OpenWrt on the D-Link
DIR-510L rev A1, but since it's listed in their Table of Hardware as supported, you can
head
over to the
OpenWrt install instructions
and read on there.
Note: Flashing custom firmwares is always on you're on own risk. Make sure to
read OpenWrt's wikis to understand the risks and how to proceed if something goes
wrong.

D-Link stock firmware for the DIR-510L rev A1

Stock firmwares for the DIR-510L rev A1 are available under the download section on the
modem's
support page. You can also refer
to the router's manual for instructions on how to upgrade the firmware.